Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9221127 | Method for producing welded tubes from steel | Franz Martin Knoop, Michael Kaack | 2015-12-29 |
| 7735348 | Method and bending press for bending boundary edge of a sheet for shaping into an open seam tube | Manfred Sawitzki, Johannes Gross-Weege, Wolfgang Hartjenstein, Manfred Lenuck | 2010-06-15 |
| 6931931 | Device for ultrasonic weld seam testing of longitudinally welded pipes for longitudinal and transversal errors | Alfred Graff, Jürgen Verhoeven, Thomas Marcial Kersting | 2005-08-23 |